TY - JOUR
T1 - Numerical modeling for an in situ single-point-mooring cage system
AU - Huang, Chai Cheng
AU - Tang, Hung Jie
AU - Wang, Bo Seng
N1 - Funding Information:
Manuscript received October 29, 2009; revised March 14, 2010; accepted April 24, 2010. Date of publication August 09, 2010; date of current version September 01, 2010. This work was supported by the National Science Council under Grant NSC98–2221-E-110–087 and the Fisheries Agency, Council of Agriculture of Taiwan. Associate Editor: H. Maeda. C.-C. Huang is with the Department of Marine Environment and Engineering, National Sun Yat-sen University, Kaohsiung 804, Taiwan (e-mail: [email protected]). H.-J. Tang is with the Tainan Hydraulic Laboratory, National Cheng Kung University, Tainan 709, Taiwan (e-mail: [email protected]). B.-S. Wang is with the Disaster Prevention Research Center, National Cheng Kung University, Tainan 709, Taiwan (e-mail: [email protected]). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/JOE.2010.2050351
PY - 2010/7
Y1 - 2010/7
N2 - To mitigate marine pollution intensity at the sea bottom, an automatic rotating type of cage systems such as a single-point-mooring (SPM) cage system is often regarded as biofriendly equipment for fish farming in the open sea due to spreading uneaten waste feed and fish feces into a vast area. Though the SPM cage dynamic features under regular sea state have been investigated in previous researches, the in situ sea state is by no means a regular one, thus a further exploration of the dynamic response in the random sea is critical before deploying cages into the open sea. This work developed a numerical model for irregular sea states to simulate an SPM cage system in an unsheltered open sea, considering the environmental conditions as irregular waves combined with a steady uniform current. To validate the numerical model, a full-scale physical model was tested in the field, where both sea states and mooring line tension were recorded. Results indicate that the numerical model predictions have good agreement with field measurements in both time and frequency domains, while the net-volume deformation is presented numerically to show fish net space variation in a random sea.
AB - To mitigate marine pollution intensity at the sea bottom, an automatic rotating type of cage systems such as a single-point-mooring (SPM) cage system is often regarded as biofriendly equipment for fish farming in the open sea due to spreading uneaten waste feed and fish feces into a vast area. Though the SPM cage dynamic features under regular sea state have been investigated in previous researches, the in situ sea state is by no means a regular one, thus a further exploration of the dynamic response in the random sea is critical before deploying cages into the open sea. This work developed a numerical model for irregular sea states to simulate an SPM cage system in an unsheltered open sea, considering the environmental conditions as irregular waves combined with a steady uniform current. To validate the numerical model, a full-scale physical model was tested in the field, where both sea states and mooring line tension were recorded. Results indicate that the numerical model predictions have good agreement with field measurements in both time and frequency domains, while the net-volume deformation is presented numerically to show fish net space variation in a random sea.
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U2 - 10.1109/JOE.2010.2050351
DO - 10.1109/JOE.2010.2050351
M3 - Article
AN - SCOPUS:77956342422
SN - 0364-9059
VL - 35
SP - 565
EP - 573
JO - IEEE Journal of Oceanic Engineering
JF - IEEE Journal of Oceanic Engineering
IS - 3
M1 - 5545463
ER -
